Abstract: Embodiments including a charge responsive optical material are disclosed.

Abstract: A gas generation system includes a chemical reactor configured to produce a gas from a continuous flow of aqueous solution, and includes a pump configured to control the flow of the aqueous solution through the chemical reactor to control a production rate of the gas.

Abstract: An enhanced-contrast projection screen and method of controlling such screens are disclosed. An embodiment of a dynamic projection screen includes a passive layer and at least one active layer. The active layer is superimposed on at least a portion of the passive layer and is adapted to selectively toggle between being transparent and being opaque. A method of controlling such a screen includes determining desired dimensions of a reflective region, and activating at least a portion of an active layer superimposed on at least a portion of a passive layer. The active layer is adapted to selectively toggle between being transparent and opaque.

Abstract: A sensor/switching device configuration that includes a substrate and at least one element imprinted on the substrate containing an electroconductive material.

Abstract: A projection screen unit includes a first projection surface optimized for a predetermined range of ambient conditions and a second projection surface optimized for a second, different range of ambient conditions.

Abstract: A method of conveying information from an electronic identification label to an interrogator includes coupling energy from an external field into a resonant circuit of the electronic identification label. The method also includes the electronic identification label periodically storing and discharging an amount of the coupled energy wherein the period that the electronic identification label stores and discharges the energy conveys information about the electronic identification label to the interrogator.

Abstract: A method of conveying information from an electronic identification label to an interrogator includes coupling energy from an external field into a resonant circuit of the electronic identification label. The method also includes the electronic identification label periodically storing and discharging an amount of the coupled energy wherein the period that the electronic identification label stores and discharges the energy conveys information about the electronic identification label to the interrogator.

Abstract: A production system includes a reaction chamber having an inlet and outlet, a gas collection chamber coupled with the reaction chamber and a regulator coupled to the gas collection chamber. The regulator controls the flow of reactant to the reaction chamber in response to the pressure in the gas collection chamber.

Abstract: A gas generation system includes a chemical reactor configured to produce a gas from a continuous flow of aqueous solution, and includes a pump configured to control the flow of the aqueous solution through the chemical reactor to control a production rate of the gas.

Abstract: A hydrogen generating apparatus includes a chemical reaction chamber, a chemical solution reservoir, an unpowered pressure-producing member for moving a chemical solution from the chemical solution reservoir to the chemical reaction chamber, and a distributed catalyst bed about the chemical reaction chamber.

Abstract: A fuel cell cartridge including a thermally-initiated hydrogen fuel source where the fuel cell cartridge is configured to receive radio frequency energy for thermally initiating the fuel source to produce hydrogen gas.

Abstract: A gas generation system includes a chemical reactor integrated with a liquid/gas separator. The reactor is configured to receive a continuous stream of aqueous solution.

Abstract: A hydrogen production system includes a reactor having an inlet and an outlet and a catalyst disposed in the reactor.